Summary https://www.reddit.com/r/BambuLab/comments/1i3gq1t/why_you_should_care_about_bambu_labs_removing/
Lewis Rossman video https://youtu.be/aIyaDD8onIE
tl;dr: A firmware update scheduled for January 23rd will remove the ability of third-party software such as Orca Slicer or the Panda Touch to connect directly to your printer. Users of third-party slicers will have to export sliced files and load them in a new “Bambu Connect” app in order to start prints or manage the printer.
IIRC Slic3r and all its derivatives are copyleft though, not permissive. Is Bambu doing a GPL violation?